# name : Prop.test with (Wald) conf of diff
# key : prop.test.diff.wald.ci
# contributor: Shuguang Sun
# --
prop.test(
${1:x = c(success)}, ${2:n = c(counts)},
conf.level = 0.95,
correct = ${3:\"$$(yas-choose-value '("TRUE" "FALSE"))\"}
)